re: How much does someone's taste in music affect your opinion of them?

"It's not what you're like, it's what you like." Of course, while this is a good line, the lesson of High Fidelity is that this attitude is wrong.

I will say that people have mainstream tastes in everything tend not to be adventuresome people. It doesn't mean I don't like them or think less of them, but I do find that I'm more likely to find them boring. But it's not a hard and fast rule or anything.